package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.Setter;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
 * 菜品管理
 */
@RestController
@Slf4j

@RequestMapping("/dish")
public class DishController {
    @Autowired
    private DishService dishService;

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private CategoryService categoryService;

//    @Autowired
//    private RedisTemplate redisTemplate;
    /**
     * 新增菜品
     * @param dishDto
     * @return
     */
    //@RequestBody 网页是json数据时要加此注解才能接收
    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());

        dishService.saveWithFlavor(dishDto);

        //清理所有菜品的缓存数据
        //Set keys = redisTemplate.keys("dish_*");
        //redisTemplate.delete(keys);

        //清理某个分类下面的菜品缓存数据
//        String key = "dish_"+dishDto.getCategoryId()+"_1";
//        redisTemplate.delete(key);

        return R.success("菜品添加成功");
    }

    /**
     * 菜品信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){

        //构造分页构造器对象
        Page<Dish> pageInfo = new Page<>(page,pageSize);
        Page<DishDto> dishDtoPage = new Page<>();

        //条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(name != null,Dish::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);
        //执行分页查询
        dishService.page(pageInfo,queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo,dishDtoPage,"records");

        List<Dish> records = pageInfo.getRecords();

        List<DishDto> list = records.stream().map((item) -> {
            DishDto dishDto = new DishDto();

            BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);
            if (category != null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            return dishDto;
        }).collect(Collectors.toList());

        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);
    }

    /**
     * 根据id查询菜品信息和对应的口味信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id){

        DishDto dishDto = dishService.getByIdWithFlavor(id);

        return R.success(dishDto);
    }

    /**
     * 修改菜品
     * @param dishDto
     * @return
     */
    //@RequestBody 网页是json数据时要加此注解才能接收
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());

        dishService.updateWithFlavor(dishDto);

        //清理所有菜品的缓存数据
        //Set keys = redisTemplate.keys("dish_*");
        //redisTemplate.delete(keys);

        //清理某个分类下面的菜品缓存数据
//        String key = "dish_"+dishDto.getCategoryId()+"_1";
//        redisTemplate.delete(key);

        return R.success("修改菜品成功");
    }

    /**
     * 根据条件查询对应的菜品数据
     * @param dish
     * @return
     */
    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){
//        List<DishDto> dishDtoList = null;
//
//        String key = "dish_"+dish.getCategoryId()+"_"+dish.getStatus();
//
//        //先从redis中获取缓存数据
//        dishDtoList = (List<DishDto>) redisTemplate.opsForValue().get(key);
//
//        if (dishDtoList!=null){
//            //如果存在，直接返回，无需查询数据库
//            return R.success(dishDtoList);
//        }

        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId() != null,Dish::getCategoryId,dish.getCategoryId());
        //添加条件，查询状态为1（起售状态）的菜品
        queryWrapper.eq(Dish::getStatus,1);
        //添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        List<Dish> list = dishService.list(queryWrapper);

        List<DishDto> dishDtoList = list.stream().map((item) -> {
            DishDto dishDto = new DishDto();

            BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);
            if (category != null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            //当前菜品的id
            Long dishID = item.getId();
            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();
            lambdaQueryWrapper.eq(DishFlavor::getDishId,dishID);
            List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);
            dishDto.setFlavors(dishFlavorList);
            return dishDto;
        }).collect(Collectors.toList());

        //如果不存在，需要查询数据库，将查询到的数据缓存到redis中
        //redisTemplate.opsForValue().set(key,dishDtoList,60, TimeUnit.MINUTES);

        return R.success(dishDtoList);
    }


    /**
     * 根据ids删除菜品
     * @param ids
     * @return

    @DeleteMapping
    public R<String> delete(Long ids){
        log.info("删除菜品，id为：{}",ids);
        dishService.remove(ids);
        dishFlavorService.removeById(ids);
        return R.success("分类信息删除成功");
    }
     */
    @DeleteMapping
    public R<String> delete(String ids) {
        log.info("售卖状态，id为：{}",ids);
        String[] split = ids.split(",");
        List<Long> Ids = new ArrayList<>();
        for (int i = 0; i < split.length; i++) {
            dishService.remove(Long.valueOf(split[i]));
        }
        return R.success("分类信息删除成功");
    }
    /**
     * 售卖状态单个
     * @param ids
     * @return

    @PostMapping("/status/{status}")
    public R<String> status(@PathVariable("status") Integer status, Long ids){
        log.info("售卖状态，id为：{}",ids);
        Dish dish = dishService.getById(ids);
        if (dish!=null){
            dish.setStatus(status);
            dishService.updateById(dish);
            return R.success("售卖状态修改成功");
        }
        return R.error("售卖状态修改异常");
    }
     */
    /**
     * 批量修改售卖状态
     * @param status
     * @param ids
     * @return
     */
    @PostMapping("/status/{status}")
    public R<String> status(@PathVariable("status") Integer status,String ids) {
        log.info("售卖状态，id为：{}",ids);
        String[] split = ids.split(",");
        List<Long> Ids = new ArrayList<>();
        for (int i = 0; i < split.length; i++) {
            Ids.add(Long.valueOf(split[i]));
        }
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.in(ids!=null,Dish::getId,Ids);
        List<Dish> list = dishService.list(queryWrapper);
        for (Dish dish : list) {
            if (dish!=null)
            {
                dish.setStatus(status);
                dishService.updateById(dish);
            }

        }
        return R.success("售卖状态修改成功");

    }
}

